Im not sure about the best but my favs are Super Mario galaxy, Zelda TP, and SSBB. I love them all and it depends on what im in the mood for. But ive spent most of my time of TP and SSBB.
The problem with the wii? The games have little depth.
TLoZ TP and SSBB are two of the best games. People are complaining about SSBB (believe me, I spend half my online time on a website dedicated to it) having too much done in the story making the actual stuff suck.
